Just in case they were thinking of doing otherwise, signs at the new city hall building in Chandler, Arizona warn people that they shouldn't drink from the toilets and urinals:

A few employees have been cracking jokes and speculating about what it would take to make them slurp from potties when water fountains and sinks are a few feet away.

"I'm glad that I saw that sign because I was very thirsty and looking for a means to quench my thirst," Mayor Boyd Dunn quipped. "Seriously, I'm certain there's some regulation out there that requires that type of sign."

Perhaps not as blunt, but there's a similar sign at our school student center. It says "The water in the toilets may be gray. This is because it is collected rainwater gathered to save the environment. It is not potable."

Thankfully, this stopped me from continuing to refill my water bottle in the toilets after they installed the collection system.